Friction cap and package



Dec. 15, 1936. L. A. VON TILL: 2,064,042

FRICTION CAP AND PACKAGE Filed July 30, 1932 l INVENTOR ZmzzZrA. V01; Ii'll ATTQRNEY ure cap in taking, up the size variations without Patented Dec. 15, 1936 FRICTION CAP Louis A. we Till, Brooklyn, N.

Anchor Cap & Cl

City, N. Y., a corporation 0! AND PACKAGE Y., assignor to me Corporation, Long Island New York Application July 30-, 1932. No. 626,425

The present invention relates to closure caps and sealed packages, and more particularly to a friction cap and to the package fcrmed thereby.

In packaging products such as talcum powder and the like, slip capsv are utilized quite generally because of the ease with which they can be removed and applied. Such caps are required to fit theupper cylindrical end of they container sufliciently tight not to fall off when the container is inverted, and suiiiciently loose to be readily removed by the consumer, because they are repeatedly removed and applied. By making the caps ofmetal, a fairly accurate fit can be obtained because thevariations in the size of metal caps can be maintained within very narrow limits, although every cap varies slightly in size and shape from every othencap; These slight variations, both in the size of the cap and the container, are taken care of by the elasticity of the metaLyby inspection at the time of application, and by selecting caps thatflt individual containers. Attempts have been made to make slip caps of molded compositions such as phenolic condensation products, synthetic resins, and the like Such attempts havenot been successful, partly due to the fact that molded caps vary much more from a standard size than metal caps due to manufacturing limitations, and partly due to. caps are fragile and less el For these reasons, molded not supplanted metal clos although they have an vantages.

The present invention aims to provide an inexpensive molded closure cap adapted to frictionally engage acontainer. The construction of the cap is designed to size itself'to take up the variations in size and-to form a friction gripon the container equal or superior to that of metal cap. The inventionaims, also,-to provide a container adapted to cooperate with the closthe .i'actthat molded astic than metal ca as. slip closure caps have" ure caps to any, extent, umber of distinct adincreasing the force neces move the cap.

An object of the invention is to formed of a moldablematerial ad tionally engage a container.

Another object of the invention is to provide a closure cap having container engaging means thereon adapted to correct for size variations in the cap and the container.

I sary to apply and re-- provide a cap apted to frica molded closure cap of ctured at low cost.-

14 Claims. (Cl. 230-42) a container-I comprisin illustrate the applicatl invention may, also be utilized Another object of theinvention is to improve the friction grip between a closure cap and a container-by mi the efllect of variations in size.

Another object of the invention is to provide 5 an improved metal container adapted to cooperate with a closure cap frictionally retained there- -on.

. A further object of the invention is to provide a cap and package which-are simple in construc- 10 tion, attractive in appearance, andwhich can e manufactured at a low cost.

Other and further objects of the invention will be obv'ous upon an understanding .of the illus- 'trated embodiment about to be described be indicated in the appended claims, and

various one skilled in the art upon employment of the invention in practice.

A preferred ben-chos scription' and is shown drawing, wherein.

Fig.1 is a fragmentary side elevational view of a sealed package illustrating a preferre'd embodiment of, the present invention; Fig. 21s a fragmentary sectional'view illustrating the cap sealed'upo the container;

Fig. 3 ifina horizontal, sectional view taken along the e 3-3 of Fig. 1;

Fig.- 4 is a sectional view of the'closure cap of 30 the present inventio 4 Fig. 5 is a. sectional view of a. closure cap illustrating another embodiment of the invention; and

/ a further embodiment of the invention.

Referring again'to the drawing, there is shown g a body part 2, and a 4 dispensingnozzle 4. To 40 on of the'present inven- ,tion, a metal container 'prefera ly of the type used for dispensing powder and the like, is shown herein, but it will beunderstood that the in connection 45 with other types of containers. For present pur. poses, it is desirable that the sifter top 4 of the container be provided with a substantially 0y; -lindrical side wall 5 and a top portion 6 having apertures ltherein'for dispensing. the contents 5 of the container. Preferably,"the sifter top is constructed ofv acup-shaped blank which is,

suitable sifter top or orwill cylindrical portion 5 is primarily adapted to receive a suitable closure cap and is preferably provided with a plurality of outwardly extending projections or ribs I adapted to be frictionally engaged by a suitable closure cap. As shown-in Fig. 2, these projections Ill-are spaced at inter- .vals and are substantially vertical, that is, their length is preferably greater than their width. However, other suitably shaped projections may be advantageously utilized. Preferably, the projections II] are formed by striking portions of the metal of zone radially outwardly during formation of the sifter top 4. a

In order to seal the sifter top or dispensing nozzle so that the contents of the container cannotbe spilled accidently, a suitable closure cap II is provided, comprising a cover portion I2 and a substantially cylindrical depending skirt' I4 having a slightly larger-periphery than the sealing zone 5 of the container upon which the cap is to be applied. The caps, preferably are formed of a phenolic condensation product or other organic molding material.

The invention is particularly concerned. with overcoming the difficulties encountered heretofore in attaching these molded caps to containers so that they are readilyi'removable, and yet, securely retained against accidental displacement. This is accomplished herein by providing an annular rib I5 which extends about the inner periphery of the skirt portion andprojects radially inwardly to engage the projections ID on the sealing zone of the container. The rib I5 is illustrated in the drawing as continuous, but if desired it may be interrupted. Greater variations in size of cap and container may be .accommodated if the rib I5 is formed in a plane inclined with respect to the horizontal plane of the cap, as shown more particularly in Fig. 4.

By reason of the rib I5 being disposed in a plane inclined to the bottom of the cap, the cap will take up a greater range of variations in size; The outward pressure is applied at various distances from the bottom of the cap whichpermits the cap to stretch more easily than if the pressure was applied at the same distance fromthe bottom of the cap. In addition, the inclined rib facilitates application and removal of the cap. In removing-a cap, there is a tendency to rotate it. With the inclined rib, rotation produces a cam action tending to raise the cap, thereby facilitating removal of it. Ifhe vertical ribs ion the cam concentrate the pressure at several points about the periphery which permits the cap to deform slightly and take up the necessary size variations The projections III, by reason of their vertical length, are always in engagement with the rib l5, that is, the various projections are engaged at different elevations when the cap is sealed upon the container. The seal'is sufficiently tight to prevent accidental displacement and removal. The projections, provide a. substantially resilient sealing zone, adapted to cooperate with the rib I'5 of the closure cap to form an effective grip. 1 i

In order to seal the sifter dispensing nozzle, a suitable sealing liner I6 of felt or other material is placed iri'the upper portion of the cap. Preferably, an annular recess I1 is provided in the skirt of the cap by means of an annular rib I9 to seat the outer peripheryv of the liner and prevent it from falling out of the cap. .In-many instances, it is desirable to press the liner firmly against the portion of the apertures I in the container-to be sealed and for this purpose, a suitable projection such as the annular rib 20 may be provided on the underside of the cover part I2. I k

In Fig. 5, a slightly modified form of closure cap is shown wherein an inwardly extending rib 25 is provided in the-skirt of the cap, which has a substantially sinuous or wavy contour when viewed in elevation. This rib provides an excellent cam effect, since the upper and lower'arcuate portions 26 and 21 respectively, cooperate with the projections II] of the container to engage them at diiierent elevations. Furthermore, the cam effect is attained by slightly rotating the cap whereby the rib 25 tends to raise the cap upwardly at'each projection I0 about the periphery of the zone 5. The rib is also very effective in accommodating variations in sizes. While the cap constructions described above can be used without the verticalribs III, the cap shown in Fig. 6 is primarily adapted for. application to a cylindrical sealing zone. The cap differs from the above construction in that a plurality of vertical ribs 30 are provided to take up the variations in size between the cap and container.

In making the parts oi the package shown herein, the body part of a container is constructed in the usual manner and, the sifter top 4 is shaped to provide projections l0 and apertures I. The closure cap is molded by placing a quantity of material into a mold and then form-- suitable automatic machinery maybe utilized or this operation may be performed by manual labor, "since a slight downward pressure is suflicient to force the cap on the container.

It will be seen that the present invention provides a simple and inexpensive package particularly adapted for dispensing products in a powder form, for example, soap powder, talcum powder, various cosmetics, pulverized spices and other products which do not require avery tight hermetic seal. The caps shown herein, are molded in a convenient manner and adapted to securely engage the container, to provide both aneflective original seal and an equally efllcient reseal. The inclined annular rib facilitates appli- I cation and removal of the capsby cooperating with the projections on the container. The package is attractive in appearance and thereby promotes the salability of the products packed therein.

. As various changes maybe made 'in the form, construction and arrangement of parts without departing from the spirit and scope of the invention and without sacrificing its advantages, it is to be understood that all matter herein is to be interpreted as illustrative andnot in a limiting sense.

While the present invention is described with particular reference to molded closure caps, various features thereof are applicable to metal caps. Having thus described my inventiomI claim:

1. In a molded closure cap of the class described, the combination of a cover p'ortion,-a substantially cylindrical, depending skirt of uniform length throughout its circumference adapted to receive decorations, and an annular rib.

extending about the inner periphery of said skirt adapted to frictionally engage a container, said rib being spaced a greater distance from the lower edge of said skirt throughout half its periphery than through the other half of its periphery.

2. In a.' sealed package, the combination of a metal container having. a substantially cylindrical nozzle at the upper end thereof, and a closure cap formed of a phenolic condensationproduct having an endless rib in the skirt thereofv for engaging said nozzle, said rib being sub-' stantially circular when viewed in plan and substantially elliptical when viewed in elevation.

-3. In a sealed package, the combination of a container having a cap receiving portion at the top thereof, provided with a plurality of outwardly extending projections,- and a friction closure cap having a skirt of substantially uniform length provided with an inwardly extending-rib disposed in a Plane inclined with respect'to the lower edge of the skirt, said rib being adapted to frictionally engage said projections to hold said cap on said container.

4. In a sealed package, the combination of a metal container having a cylindrical portion at the top thereof, and a closure cap formed of a phenolic condensation product having a substantially cylindrical skirt and an inwardly extending elliptical rib formed in said skirt adapted to frictionally engage the cylindrical portion'of the container said rib being independent of the exterior of said skirt.

5. In a sealed package, the combination of a metal container having a substantially cylindrical sifter nozzle provided with outwardly extending projections at the side thereof, and a closure cap-having an annular radially inwardly extending rib in the skirt thereof for frictionally engaging said projections at different elevations throughout the periphery of said annular means.

6. In a sealed'package, the combination of a 'metal container having a dispensing nozzle .at

the upper end thereof provided with a cap engaging zone and interrupted projections in said zone, and a closure cap having a liner therein, for sealing said dispensing nozzle, means for holding the liner in position and annular means in the skirt of said cap for frictionally engaging said projections, said annular means beingsubstantially circular when viewed in plan and substantially elliptical when viewed in elevation.

7. In a moldedclosure cap of the class described, the combination of a cover portion,- a depending skirt, and an inwardly extending lib formed in said skirt independently of the exterior contour thereof adapted to engage'a container, said rib having a substantially sinuous contour when viewed in elevation.

8. In'a sealed package, the combination of a container having acap engaging zone provided with outwardly extending projections, and a closure cap having an endlessrib in the skirt thereof adapted to engage said projections, said rib. having a substantially sinuous contour to facilitate application and removal of the cap.

9. In a sealed package, the combination of a container having a substantially cylindrical cap engaging zone, and' a closurecap formed of organic molding material having a rib on the interior of the skirt thereof adapted to engage said zone and hold said cap on said container,

said rib being substantially elliptical'to facilitate engagement with and removal from said zone, said rib being formed independently of the exterior contour of said skirt.'

10. In a cap molded of a phenolic condensation compound, the combination of a cover portion, a substantially cylindrical skirt portion, and a projection in said skirt adapted to frictionally engage a container, said projection appearing substantially circular when viewed in plan and elliptical when viewed in elevation.

11. In a closure cap of the class'described, the combination of .a cover portion, a substantially cylindricaldepending skirt adapted to receive decorations on'the exterior thereof, a. ribin said skirt for holding a liner within said cap,

and an elliptical projection below said rib for frictionally, engaging acontainer, said rib and projection being formed independently of the exterior of the skirt.

12. A closure cap comprising a cover portion and 2. depending skirt, said skirt having annular means for frictionally engaging a substantially cylindrical zone on a container, saidannular means being substantially circular when viewed plan and substantially elliptical when viewed in elevation.

13. In a cap formed of an organic molding compound, the combination of a cover portion, 2. depending skirt of uniform length throughout its circumference, and an endless circumferentially inclined rib'formed at the interior of said skirt adapted to frictionally engage a'container, said rib being spaced a greater distance from the lower edge of said skirt at certain portions than at other portions of said skirt.

14. In a sealed package, the combination of a metal containenan apertured sifter nozzle at the upper end-of said container, said nozzle hav LOUIS A. voN TEL. 

